Raw red or white onions should be the perfect balance of sharp and sweet, but sometimes their natural pungency can take over a dish (not to mention your breath!). Tame the burn by submerging sliced onions in an ice-water bath for about 15 minutes, which will remove the harsh natural sulfurs from the cut surfaces. Drain and pat dry before using. Bonus: The refreshing dip crisps them up, too!